中文说明：参照交通微观仿真软件vissim自带的COM接口案例，采用MATLAB实现可变信息板功能，使用的VISSIM文件为COM接口自带的实例，编程也是参照该实例。欢迎大家交流MATLAB与COM接口编程。
English Description：
This is based on the interface example included with vissim- a traffic simulation software. Matlab is used to enable the information changing function on the message board. VISSIM file used is from the example of COM interface. The programme is also based on the example. Welcome to leave your cooment on the COM interface programming and matlab